pandas.Series.dt.nanoseconds

系列.dt。纳秒

每个元素的纳秒数（>= 0 且小于 1 微秒）。

例子

对于系列：

>>> ser = pd.Series(pd.to_timedelta([1, 2, 3], unit='ns'))
>>> ser
0   0 days 00:00:00.000000001
1   0 days 00:00:00.000000002
2   0 days 00:00:00.000000003
dtype: timedelta64[ns]
>>> ser.dt.nanoseconds
0    1
1    2
2    3
dtype: int32

对于 TimedeltaIndex：

>>> tdelta_idx = pd.to_timedelta([1, 2, 3], unit='ns')
>>> tdelta_idx
TimedeltaIndex(['0 days 00:00:00.000000001', '0 days 00:00:00.000000002',
                '0 days 00:00:00.000000003'],
               dtype='timedelta64[ns]', freq=None)
>>> tdelta_idx.nanoseconds
Index([1, 2, 3], dtype='int32')